Theorem caofid0r 6303

Description: Transfer a right identity law to the function operation. (Contributed by NM, 21-Oct-2014.)

Hypotheses

Ref	Expression
caofref.1	|- ( ph -> A e. V )
caofref.2	|- ( ph -> F : A --> S )
caofid0.3	|- ( ph -> B e. W )
caofid0r.5	|- ( ( ph /\ x e. S ) -> ( x R B ) = x )

Assertion

Ref	Expression
caofid0r	|- ( ph -> ( F oF R ( A X. { B } ) ) = F )

Distinct variable groups:   x, B   x, F   ph, x   x, R   x, S

Allowed substitution hints:   A( x)   V( x)   W( x)

Proof of Theorem caofid0r

Dummy variable w is distinct from all other variables.

Step	Hyp	Ref	Expression
1		caofref.1	. 2 |- ( ph -> A e. V )
2		caofref.2	. . 3 |- ( ph -> F : A --> S )
3	2	ffnd 5514	. 2 |- ( ph -> F Fn A )
4		caofid0.3	. . 3 |- ( ph -> B e. W )
5		fnconstg 5570	. . 3 |- ( B e. W -> ( A X. { B } ) Fn A )
6	4, 5	syl 14	. 2 |- ( ph -> ( A X. { B } ) Fn A )
7		eqidd 2235	. 2 |- ( ( ph /\ w e. A ) -> ( F ` w ) = ( F ` w ) )
8		fvconst2g 5903	. . 3 |- ( ( B e. W /\ w e. A ) -> ( ( A X. { B } ) ` w ) = B )
9	4, 8	sylan 283	. 2 |- ( ( ph /\ w e. A ) -> ( ( A X. { B } ) ` w ) = B )
10		caofid0r.5	. . . 4 |- ( ( ph /\ x e. S ) -> ( x R B ) = x )
11	10	ralrimiva 2617	. . 3 |- ( ph -> A. x e. S ( x R B ) = x )
12	2	ffvelcdmda 5817	. . 3 |- ( ( ph /\ w e. A ) -> ( F ` w ) e. S )
13		oveq1 6065	. . . . 5 |- ( x = ( F ` w ) -> ( x R B ) = ( ( F ` w ) R B ) )
14		id 19	. . . . 5 |- ( x = ( F ` w ) -> x = ( F ` w ) )
15	13, 14	eqeq12d 2249	. . . 4 |- ( x = ( F ` w ) -> ( ( x R B ) = x <-> ( ( F ` w ) R B ) = ( F ` w ) ) )
16	15	rspccva 2922	. . 3 |- ( ( A. x e. S ( x R B ) = x /\ ( F ` w ) e. S ) -> ( ( F ` w ) R B ) = ( F ` w ) )
17	11, 12, 16	syl2an2r 599	. 2 |- ( ( ph /\ w e. A ) -> ( ( F ` w ) R B ) = ( F ` w ) )
18	1, 3, 6, 3, 7, 9, 17	offveq 6296	1 |- ( ph -> ( F oF R ( A X. { B } ) ) = F )

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1398   e. wcel 2205   A.wral 2522   {csn 3694   X. cxp 4752   Fn wfn 5352   -->wf 5353   ` cfv 5357  (class class class)co 6058   oFcof 6273

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-14 2208  ax-ext 2216  ax-coll 4230  ax-sep 4233  ax-pow 4292  ax-pr 4327  ax-setind 4664

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3046  df-csb 3142  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-iun 3998  df-br 4115  df-opab 4177  df-mpt 4178  df-id 4419  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-ima 4767  df-iota 5317  df-fun 5359  df-fn 5360  df-f 5361  df-f1 5362  df-fo 5363  df-f1o 5364  df-fv 5365  df-ov 6061  df-oprab 6062  df-mpo 6063  df-of 6275

This theorem is referenced by: (None)